Fig. 9From: Structural effects on kinetics and a mechanistic investigation of the reaction between DMAD and N–H heterocyclic compound in the presence of triphenylarsine: spectrophotometry approachThe original experimental absorbance curve versus time at a selected wavelength of 305 nm for the reaction between (1) (10−2 M), (2) (5 × 10−3 M) and isatin (N–H) (10−2 M) in methanol. The dotted curve shows experimental values, and the solid line is the fitted curve at 18 °CBack to article page